Apparatus for spraying noxious weed killing solutions and the like



Feb. 19,1935. E, E 1,991,930

APPARATUS FOR SPHAYING NOXIOUS WEED KILLING SOLUTIONS AND THE LIKE Fi led April 10, 1934 IIIB E EiE'fL EJf I PatentedFeb. 19, 19 35 Y a i Q UNITED STATES IPATENTYOFFICE APPARATUS FOR SPRAYING NOXIOUS WEED V KILLING SOLUTIONS AND T E LIKE Edward Hope, Island Bay, wellington,

New Zealand Application April 10, 1934', Serial No. 719,927 r 2 Claims. (oi; 47-49) The invention relates to apparatus for apply- A suitable gas for injection into, or for charging weed killing solutions, insecticidal and ger ing or impregnating asolutionfor weed killing micidal solutions to vegetable growth, and has purposes, is sulphur, dioxide, although any other for its object the provision of improved apparagas suitable for the purpose may be used.

I tus, which is particularly adapted for the root In order to enable air pressure to be generated 5 injection of weed killing or herbicidal solutions, in the container 1 instead of, or to supplement and which may also be used to spray insecticidal the gas pressure, an air pressure pump 9 is fitted and germicidal solutions. to the container. 7

The improved apparatus comprises a container The director nozzle through which the solu- 10 for holding a solution under pressure, means on tion is delivered, is fitted to the end of a flex- 10 and in communication with said container for ible pipe 10 connected with the nipple 6, said generating pressure therein and a director nozdirector nozzle comprising a tube 11 provided zle connected with said container having a soluwith handles or grips 12, and having slidable tion discharge passage controlled by a valve opthereon a sleeve 13 formed with an enlarged or erated from a sleeve slidable on said director flared lower end 1311. l5 nozzle. The tube 11 has fitted in its outer or lower In the accompanying drawing, in conjunction end, a hollow needle 14, which projects beyond with which the invention will be further dethe tube 11, the projecting portion of said neescribed, to enable it to be better understood:-- dle 14 being screwed into the portion held with- Figure 1 isan elevation of the container in the tube 11, to facilitate replacement in the 20 Figure 2 an elevation of the director nozzle, event of the needle point being damaged or and broken.

Figure 3 a part elevation and part sectional The passage in the needle 14 is open to the elevation of the latter. interior of the tube 11, the inner end of said pas- The container 1 is constructed to withstand sage being surrounded by a seating for a valve 25 any predetermined pressure (either gas or, air, 15 attached to the sliding sleeve 13 by a screw or gas and air combined) from within, and for 16 which operates in a slot 11a in the tube 11. convenience is provided with a domed top 2, said valve 15 being tapered to facilitate its entry hinged at 3, and adapted to be secured on the into the upper end of the tube 11.

container 1 to close same by a suitable num- The needle point is solid with a plurality of 30 ber of screw fastenings 4, packing being prodischarge orifices 14a at the sides thereof. vided between the top 2 and upper edge of the A spring 17 in compression between an intercontainer to ensure an air tight joint being nal ledge 18 on the sleeve 13, and an external made. edge 19 on the tube 11, maintains the sleeve 13 An opening in the top 2, closed by a screw cap forced towards the needle point, so that the 35 5 is provided for placing solution in the conlatter projects only a short distance beyond the tainer 1, while near its bottom said container is flared lower end 13a, and so that the valve 13 fitted with a cock controlled outlet nipple 6, rests on its seating and closes the inner end of through which solution is enable to be discharged the needle.

from the container 1. Pressure is generated in In use for treating the roots of weeds with a 40 the container 1 by the use of that known form weed destroying solution, such as a sulphur d1- of gas container or bomb capable of being oxide charged or impregnated aqueous solution punctured to release its gas for injection into containing caustic soda, and white arsenic, and a liquid, and to enable this to be done the with the required pressure set up in the concontainer 1 is fitted externally with a conventainer, and the nipple 6 open, the director noz- 45 tional bomb holder and puncturing device '7 in zle is forced by means of the handles or grips communication with the interior of the container 12 so that the projecting needle point enters the 1, so that upon pressure being applied to the ground, the discharge orifices 14a being therebomb in the device 7, per medium of the screw by covered.

8, said bomb is punctured and. the gas contained Continued downward pressure applied to the therein is released for injection into liquid in director nozzle causes the needle 14 to pass furthe container ther into the ground, and the flared lower end A pressure gauge 1a is provided on the con- 13a of the sleeve 13 to come in contact with the tainer 1 for indicating the pressure contained latter, whereby said sleeve 13 is slid up thetube therein. 11 against the action of the spring 17, and lifts 66 the valve 15 from its seating allowing solution under pressure to pass from the container 1 through the flexible pipe 10, tube 11 and needle 14 into the ground.

Upon the needle 14 being withdrawn from the ground, the spring 1'7 slides the sleeve 13 down the tube 11 and reseats the valve 15 in and on the upper end of the needle 15, thereby preventing tlie esqape of solution while the needle 14 isout'of the ground.

By the means described-solution can be injected into the ground all round the weednto effect a thorough spraying of the ,IQQPRS W hiQh are receptive to the solution qith t he e tilt that the whole weed is utilimately destroyed.

The apparatus as described can also be ggegl; to spray solutions on trees and plants above'the' ground, or the director noaale gnay be ggeplegegi by an ordinary spraying nozzle for the last neptioned operation. I

What I aim eeq se r J20 grann Lett 9:1" QnitedZSt ates of'Ame a ist:-

A eti $95 the wh prising'ap ainer f o rja Q p sure 1eeee ee9mesei aten with s id tanta er for generating pressure therein, a director nozzle fitting with a hollow needle through which the solution is discharged, a valve controlling the same and a slidable sleeve on the director nozzle adapted to operate said valve, said slidable sleeve being spring-operated and formed with an enlarged flared hollow end, thereby causing the valve t o clo se theinner en gl I said needle.

Apparatus for the purpose set 101th, comprising a container for holding a; solution unde r pressure; means on saidcontainer for injecting gas into the solution in the latter; a. pqrnp (on saidcontainer for generating air pres- ;sur therein; la flexible pipe connected by a cock qonti qlled nip ple ,with said container; a director nggz le on said pipe comprising a tube open at one end to the latter; and having a hollow nee- Aittediin sits gther end; a spring operated sleeve ,with a flared or enlarged lower end slidable on said tube; and a valve for opening and glqsi e th inne and n edl atta hed o said slee and iq eta mg th rew th, a lsubstantia y {desc i ed and .lust e ed in the ermine- EDWARD norm. 

